User's Manual

UE910 V2 Hardware User Guide
1VV0301065 Rev.1 – 2013-12-12
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved. Page 23 of 67
4.2.2. Turning OFF by tying low ON_OFF*
To turn OFF the UE910 V2 the pad ON_OFF* must be tied low for at least 2 seconds and then
released. The same circuitry and timing for the power on must be used.
When the hold time of ON_OFF* is above 2 seconds, the UE910 V2 goes into the finalization state
and will shut down PWRMON at the end of this state.
The period of the finalization state can vary according to the state of the UE910 V2 so it cannot be
fixed definitely.
Normally it will be 10 seconds after releasing ON_OFF* and DTE should monitor the status of
PWRMON to see the actual power off.
4.3. Summary of Turning ON and OFF the Module
The chart below describes the overall sequences for turning ON and OFF the module.